<template>
  <div>
    <div class="search">
      <div>
        <input type="text" v-model="keyword" class="input-search" placeholder="输入城市名或拼音"/>
      </div>
    </div>
    <div class="search-content"
         ref="search"
         v-show="keyword"
    >
      <ul>
        <li
          class="search-item border-bottom"
            v-for="item of list"
             @click="handleClickCity(item.name)"
            :key="item.id">
          {{item.name}}
        </li>
        <li class="search-item border-bottom" v-show="hasNoData">
          没有找到匹配数据
        </li>
      </ul>
    </div>
  </div>
</template>

<script>
  import Bscroll from 'better-scroll'
  import {mapMutations} from 'vuex'
  export default {
    name: 'CitySearch',
    props:{
      cities:Object
    },
    data () {
      return{
        keyword:'',
        list:[],
        timer:null
      }
    },
    watch:{
      keyword () {
        if (this.timer){
          clearTimeout(this.timer)
        }
        if (!this.keyword){
          this.list=[]
          return
        }
        this.timer = setTimeout(()=>{
          const result = []
          for (let i in this.cities){
            this.cities[i].forEach((value)=>{
              if (value.spell.indexOf(this.keyword)>-1||value.name.indexOf(this.keyword)>-1){
                result.push(value)
              }
            })
          }
          this.list = result
        },100)
      }
    },
    mounted () {
      this.scroll = new Bscroll (this.$refs.search)
    },
    methods:{
      handleClickCity (city) {
        this.changeCity(city)
        this.$router.push('/')
      },
      ...mapMutations(['changeCity'])
    },
    computed:{
      hasNoData () {
        return !this.list.length
      }
    }
  }
</script>

<style lang="stylus" scoped>
  @import "~styles/varibles.styl"
  .search
    height .72rem
    background $bgcolor
    padding 0 .1rem
    .input-search
      box-sizing border-box
      width 100%
      text-align center
      height .62rem
      line-height .62rem
      padding 0 .1rem
      color #666
      border-radius .06rem
  .search-content
    z-index: 1
    position absolute
    overflow hidden
    left 0
    right 0
    bottom 0
    background #eee
    top 1.58rem
    .search-item
      line-height .62rem
      padding-left .2rem
      color #666
      background #fff
</style>
